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Finding the Fourth Proportional to 4,985.87, 6,883 and 3,864.29

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Solution

The fourth proportional to 4,985.87, 6,883 and 3,864.29 is: 5,334.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,985.87 : 6,883 = 3,864.29 : x
  2. Step 2: Convert to fraction form
    4,985.87/6,883 = 3,864.29/x
  3. Step 3: Cross multiply
    4,985.87x = 6,883 × 3,864.29
  4. Step 4: Simplify right side
    4,985.87x = 26,597,908.07
  5. Step 5: Solve for x
    x = 26,597,908.07/4,985.87
  6. Step 6: Final answer
    x = 5,334.66

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.